Pipe cutting, rounding, and threading machine



PIPE CUTTING, ROUNDING, AND THREADING MACHINE Original Filed Jim 7, 1920. 5 Sheets-Sheet 1 FgMZ gnvemtoz j) (liter/2114 June 26, 1923. 1,460,088

E. H. WILSON PIPE CUTTING, ROUNDING, AND THREADING MACHINE Original Filed June 1920 5 Sheets-Sheet 2 Jim-um Hot June 26, 1923.

E. ,H.WILSON PIPE] CUTTING, ROUNDING, AND THREADING MACHINE I 5 Sheets-Sheet 3 Original Filed June 7 June 26, 1923.

1.460,088 E. H. WILSON PIPE CUTTING, ROUNDING, -AND THREADING MACHINE Original Filed June 1920 5 Sheets-Sheet 4 June 26, 1923. 1,460,088

E. H. WILSON PIPE CUTTING, ROUNDING, AND THREADING MACHINE Original Filed June 7, 1920 5 Sheets-Sheet 5 mumuu\mmummmwmum\\\\\\\\\\\\\\\ Patented June 26,

UNITED STATES EDGAR H. WILSON, OF CHARTIERS TOWNSHIP, ALLEGHENY COUNTY, PENNSYLVANIA,

ASSIGNOB TO TAYLOR-WILSON MANUFACTURING COMPANY, OF MOKEES ROCKS,-

I PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

PIPE CUTTING, ROUNDING, AND THBEADING MACHINE.

Application filed June 7, 1920, Serial 1T0. 387,246. Renewed Kay 4, 1922. Serial in 558,425.

tion is to provide a machine of this chars acter, having means for positively advancing the threading die, whereby the threads may be more accurately chased by the use of less power, and Without receiving any strains tending to strip the same.

A further object of the present invention is to provide a plurality of'independently operable means for moving the threading die, which means. may be individually employed-at will.

sen .a furthe object of'the invention is.

to provide means for rotating the material Being operated upon at different speeds,

which speeds are under the control of the operator.

An additional object of the present. in vention is to provide means for rounding the material being operated 'upon, the

3 roundin means being controllablejor exerting different pressures on the material.

I The foregoing and other objects,to ther with their attendant advantages, will 7 apparent as the invention becomes better un- 40 derstood, by reference to the accompanying specification and drawings forming a part thereof, it being premised that chan es. may

be made in the various details and t e manner of operation, within the scope of the apin elevation of the machine illustrated in Fi re 1'- re 3 is an end view of the front of the m chine;

Figure machine;

Figure 5 is a detail view of one of the clamps;

, Figure 6 is a sectional view through one of the clam s; Figure 7 is an enlarged detail view partly in SGCtlOIl' of a anism;

Figure 8 is a side elevation, on an enlarged scale, of the adjusting and operating means for the rounding device;

F1 re 9 is an enlarged sectional view 1 is an end view of the rear of the throughihe clamping nut for connecting the lead screw to the movable carriage; and Figure 10 is a diagrammatic view of the change speed gearing for the lead screw.

t the present time it is customary to drive machines for cutting, threading and roundin pipe, at a substantially constant speed. t is highly advantageous, however, to vary this speed in accordance with the diameter of the material being operated u on and in accordance with the character portion of the cut-off mech- 0 work being performed thereon. At the present time it is also customary tothread the material by means of a threading die mounted in a carriage,,which carriage is advanced bythe thread being chased. .This

load imposed on the thread friqpently ree present sults in stripping the same. invention provides a variable speed drive and means for positively advancing'the carriage carrying the threading die..;1"

eferring more particularly tof-the drawings, there is illustrated a machine comprising a frame 1, having projecting from one end thereof a base 2 adapted to slidably support the carriage 3. Extending lon tudinally through the frame 1 is a barre 4 having formed on its front end a casing 5 adapted to receive a series of radially adjustable gripping jaws 6. These jaws are mounted as is customary in machines of this general nature for adjustment by means of screws 7, accessible through openin 8 formed in the casing ,5. Each of the aws 6 is also mounted in a block Q, vvhio is adapted to be adjusted radiallygf dependently of the adjustment just describedjf This second adjustment issecured by means of levers 10 having pivotal mountings 11' on the barrell and b1 u cated at the r front ends Less,

to enter openings 12 formed in the blocks 9 on opposite sides of the adjustable jaws 6. The rear ends of the levers 10 may each be provided with a roller 13 adapted to cooperate with a cam surface 14 formed on a sliding sleeve 15. For sliding this sleeve lon 'tudinally of the barrel 4, it is provided Wit a groove in which is mounted a collar 16 operatively connected to the arms 17 of.

an operating oke mounted on the transversely extending shaft 18. Operatively connected to one end of the shaft 18, is an arm 19 having a link connection 20 with a similar arm21 on the transversely extendin shaft 22. This shaft 22 may be provided with an operatin lever 23, as indicated in chain lines in i ure 1, or it may be extended through the rame of the machine and connected atits opposite end by means of an arm 24 with the piston rod 25 of a piston operable in the air cylinder 26. In some instances, both the air cylinderand the lever 23 may be simultaneously employed, thereby providing independent means for rocking the shaft 1'8" and sliding the sleeve 15 on the barrel for openin or closing the jaws .6. According to the ilustrated embodiment of the invention there are three of thesejaws provided for simultaneous operation in the manner described.

As soon as the pipe, or other'inaterial to be operated upon, as been placed in the barrel 4 and gripped therein, the barrel is rotated. This rotation 'is accomplished by means of a motor 27 which is preferably a variable speed motor. If of the. direct current t pe, this motor may have its speed contro led by a suitable field rheostat. I may, however, em loy a multi-speed alternating current in liction motor of the well known type. The armature or driving shaft 28 of this motor may be provided with a,

gear 29 meshing with a gear 30 on the shaft 31. The gear 30 in turn meshes with a similar gear32 loosely carried on the shaft 33. The shaft 31 also carries a second gear34, meshing with a similar gear 35 loosely carried on the shaft 33. Intermediate the gears 32 and 35 there may be mounted a clutch for establishing an operative driving connection between either; 0 these gears and the shaft. By operating the clutch in the desired di rection, there uired speed of rotation of the shaft 33 may produced. This rotational movement is transmitted from the shaft 33 to the barrel bymeans of a gear 36 meshing with the ring gear 37 keyed to a hub 38., which is in turn keyed to the barrel 4. By utilizing a variable speed motor in comblnation with a change speed gear, it will be apparent that any one of a largenumber of d1 e rent speeds of rotation may be imparted to the barrel. This feature ishighly imrtant, as it enables the operator to reguto the required.

mechanisms comprises a gear 39, mounted on the barrel '4, and meshing with a gear 40 on the stub shaft 41, adapted to drive the shaft 42 by means of the gears 43 and 43'. The shaft 42 is provided with a longitudinally extending key-way in co-operative engagement with which slides a pinion 44 mounted between the arms 45 of an operating'handle 46, and meshing with a pinion 47, adapted to be moved by means of the handle into engagement with any one of the change 'speed gears 48. The gears 48 are mounted on one end, of the lead screw 49, thereby enablingthe speed of rotation of the lead screw to be varied as desired.

"Extending transversely of the carriage 3, and mounted in suitable bearings 50 thereon, is a rod 51 provided on one end with an operating handle .52. Intermediate its .nds the; rod is provided with a rack 53 adapted to mesh with pinions 54 rotatable in hearings in. the carriage 3. These pinions are each provided with diametrically opposite cam 5 ots 55 for the reception of plus 56 rojecting from the sides of the two halves 5 of a lead screw nut surrounding the lead screw. By sliding the rod 51 transversely, the pinions 54 will be rotated to clamp the two halves of the lead screw nut iifound' the lead screw. When this engagement has been made, it will'establish an operativedriving connection between the lead screw and the carriage 3,thereby positively driving the carriage by the lead screw.

A second means for moving the carriage 3 more rapidly than the movement whichcan be produced by the lead screw is'also provided. This means in the illustrated embodiment ofthe invention comprises a sprocket wheel 58 surrounding the barrel 4 and keyed thereto fordriving a sprocketchain 59 assing around a suitable wheel 60 on one end of the shaft 61 The shaft 61 extends parallel to a second shaft 62 in the base2 and is adapted to drive the same in a forward direction bymeansof the gears63 or in a reverse direction by means of the gears For controlling the direction of rotation of the shaft 62, there is provided a double cone clutch 65, either portion. of which may be brought intooperation by an arm 66 connected to the internal cone members. The .arm 66 is formed with .an internally threaded opening co-operating with the threaded portion 67 of the shaft 68 ex tendinglongitudinally of the base 2. This shaft is provided with a spiral gear 69 adapted to meshwith r second spiral gear to the crosshead 80 and thereby increasing mimosa 70 on the rod 51. en the rod 51 is moved laterally as described, to establish an operative driving connection between the lead screw nut and the lead screw, the operating handle 52 will pass between the forks 71. When in this position the rod 51 cannot rotated. With the rod 51 in its normal position, however, it may be rotated to establish anpperative driving connection 'between one of the cone clutches 65 and the shaft 62. When such a connection is established, the shaft 62 will drive the shaft 72 by means of the bevel gears 73. As the shaft 72 is pro vided with pinions 74, meshing with the racks 75 on the carriage 3, it will be apparent that the carriage may be rapidly moved in either direction. In actual operation the rack and pinion mechanism will be employed for obtaining quick movements of the carriage, while thelead. screw will be utilized for obtaining the slow movements necewarv for chasing threads. It will be apparent that the lead screw may be made removable if desired, so that new lead screws having different pitches corresponding to the pitches of the threads being chased, may be substituted.

The carriage 3 is formed with an opening 76, on theopposite sides of which are guides 77. Between the guides 77 is mounted av removable rounding block 78 adapted to cooperate with the under side of the pipe as it rotates. A second block 79 is also mounted between the guides '77 and is secured to a cross-head 80, by means of which it may be raised and lowered. Secured to the crosshead 8.0 is a. linkf81 forming one portion of a toggle joint and having vits'free end ivotally connected by pivot 82 to a secon link 83. The link 83 has a pivotal mounting 84 on the block 85, which block may be vertically adjusted by means of the screw 86 for varying the amount of movement imparted or decreasing the ressure exerted on the pgipe bythe blocks 8 and79. For operating the toggle links, the pin 82 is extended through a slot 87 in the piston rod 88, this rod being moved in opposite directions by cylinders 89 which may be supplied with fluid pressure at the will of the operator.

The carriage 3 also has a guide-way extending transversely therethrough for the reception of a cutting tool holder 90 provided with a cutting off tool91. The holder is adapted to be reci rocated to move the cutter into and out o engagement with the pipe by means of a rack 92 formed thereon and meshing with a pinion 93'on the shaft 94. The rotation of the shaft is controlled b means of a handle 95 under the control 0; the operator. By means of this mechathe cutting qfl tool may be rapidly "moved to the required position. This feature is highly advantageous, as machines of this nature are adapted to operate on materials having wide difierencesin diameters. To the back of the carriage is secured a vertical pintle 96forming a pivotal mounting for the gate 97, in which are mounted advancing and receding thread chasers of any well known construction. These chasers may be moved into operative engagement with the pipe after the same has been rounded by the mechanism described by means of a handle lever 98, and the gate may be held in its operative position by a suitable latch 99 The term barrel as used throughout the specification and claims, is used in its broadest sense as defining any hollow structure capable of receiving therethrough or gripping the material being operated upon.

The construction relating to the rounding mechanism disclosed herein is made the subject matter of my divisional application Serial No. 558,227, filed May 3, 1922. v

The advantages of the present invention arise from the regulable driving meansprovided for the barrel and also from the independent means provided for positively movin; the'carriage.

'Further advantages arise from the means provided for exertinga variable pressure'on the rounding blocks whereby light gauge or heavy gauge material may be shaped.

I claim:

-- 1. In a machine of the class described, a

barrel, means co-operating therewith for gripping the material being operated movable threading die, and a plurality of independently operable means driven by said barrel, rotating means for positively advancing said die, one ofsaid means being effective foralso retracting said die, substantially as described.

2. In a machine of the class described, a rotatable barrel, means oo-operating therewith for gripping the material bingoperated upon, means for rotating said barrel, a movable threading die, means for advancing said die, independent means for positively advancing and retracting said die, and

means for establishing an operative driving upon, means for rotating said barrel, a

' ing said rounding device ihto and out ofoperative position, substantially as described.

5. In a machine for rounding and threading pipefa rotatable barrel for receiving the pipe, means for rotating said barrel a carriage, a threading die on said carriage, a rounding device on said carriage, means for exerting a variable pressure on said rounding device, and mechanical means for moving said rounding device into and out of operative position, substantially as described.

6. In a machine for cutting, threading and rounding pipe, a rotatable barrel for receiving the pipe, means for rotating said barrel at variable speeds, a. carriage, a cutting device, a threading die and a rounding device on said carriage, and means for positively moving said carriage by said barrel rotating means, substantially as described.

7. In a machine for cutting and rounding pipe, a rotatable barrel adapted to receive the pipe, means for rotating said barrel, a car,- riage, a cutting mechanism carried thereby, means for operating said mechanism, a rounding device on said carriage, means for exerting a variable pressure on said rounding device and means for positively moving said carriage by said barrel rotating means, sub-.

stantially as described.

8. In'apipe cutting, rounding and threading machine, a rotatable barrel adapted to receive the pipe, means for rotating said barrel,

a carriage, a cutting mechanism carried,

thereby, a threading die on said carriage, a rounding device on said carriage,

means for exerting a variable pressure on saidrounding device, and means for positively moving said carriage by said barrel rotating means, substantiall as described.

9. In a machine for rounding and threading pipe, a rotatable barrel for receiving the pipe, means for rotating said barrel, a carriage, a threading die on said carriage, a rounding' device on said carriage, means for exerting a variable pressure on said round.- ing device and means for positively-moving said carriage y said barrel rotating means, substantialijras described.

10..In ".-a machine for cuttin and rounding pi a rotatable barrel'iil'iapted to re-' "ceive e pipe, means mid-bar rel, "jearriage, a cutting mechjanisl'n carried there meansfor operating said mechanism a rounding idevice on said carriage andmeans for positively moving said. carriage said barrel rotating means, suby as described.

13, ;111' a pipe cutting, rounding and.

said barrel, a carriage, a cutting mechanism 7 carried thereby, a threading die on said carriage, a rounding device on said carriage, and means for positively moving said car- Ifiage by said barrel rotating means, substantially as described.

12. In a machine for roundin and threading pipe, a rotatable barrel or receiving the pipe, means for rotating said barrel, a carriage, a threading die on said carriage, a rounding device on said carriage, and means for positively moving said carriage by said barrel rotating means, substantially as described,

13. In a machine for cutting and rounding pipe, a rotatable barrel adapted to receive the pipe, means for rotating said barrel, a carriage, a cutting mechanism carried thereby, means .,for operating said mechanism, a rounding device on said carriage, means for positively moving said carriage in either direction by said barrel rota-ting means, and means independent of said last named means for positively advancing said carriage,-substantially as described.

14. In a pipe cutting, rounding and threading machine, a rotatable barrel adapted to receive the pipe, means for rotating said barrel, a carriage, a cutting mechanism carried thereby, a threading die on said carriage, a rounding device on said carriage, means for positively moving said carriage in'either direction by .said barrel rotating means, and means independentof said last -named means for positively advancing said carriage, substantially as'described.

15. In a machine for rounding and threading pipe, a rotatable barrel for receiving the pipe, means for rotating said barrel, a carriage, athreading die on said carriage, a rounding device on said carriage, means for positively moving said carriage in either direction by said barrel rotating means, and means independent of said last named means for positively advancing said carriage, substantiallv as described.

16. In a machine for cutting and rounding pipe, means for gripping and rotating independently 1,4eo,ose

operable power operated means for positively moving said carriage, substantially as described.

18. In a pipe cutting, rounding and threading machine, means for gripping and rotating the pipe, a carriage, a cuttin mechanism carried thereby. a threading die on said carriage, a rounding device on said carriage, means for exerting a variable ressure on said rounding device, and mee anical means for positively moving saidcarriage, substantially as described.

19. In a pipe cutting, rounding and threading machine, means for grippingand rotating the pipe, a carriage, a cutting mechanism carried thereby, a threading die on said carriage, a rounding device on said carriage, means for exerting a variable pressure on said rounding device, and a plurality of independently operable power-operated means for moving said carriage, substantially as described. i

20. In a machine for rounding and threading pipe, means for gripping and rotating the pipe, a carriage, a threading die on sa1d carriage, a rounding device on said carriage, means for exerting a variable ressure on said rounding device and 'mec anical means for ositively moving said carriage, substantia y as described.

21. In a machine for rounding and threading pipe, means for gripping and rotating the pipe, a carria e, a threading die on said carriage, a roun ing device on said carriage, means for exerting a variable pressure on said rounding device, and a plurality of independently operable power-operpositively. moving said carriage, substantia 1y as described.

22. In a machine for cutting and rounding pipe, means for gripping and rotating the pipe, a carriage, a cutting mechanism carried thereby, means for operating said mechanism, a rounding device on said car' riage, and mechanical'means for ositively moving said carriage, substantial y as described.

23. In a machine for cutting and roundthread'ing machine, means 25. In a pipe cutting, rounding and threading machlne, means for gripping and rotating the pipe, a carriage, a cutting mechanism carried thereby, a threading die on said carriage, a rounding deviceLon said carriage, and a plurality of independently operable wer-operatedai means for positively movmg said carriage, substantially as described' echanical means for posi- 26. In a pipe cutting, rounding and.

for rotating the pipe, a carriage, a cutting mechanism carried thereby, a threading die on said carriage, a rounding device on said carriage, power-operated means for positively moving said carriage in either ection and ower-operated means independent of said ast named means for positivelymovin said carriage in one direction, substantial y as described.

27. In a machine for rounding and threading pipe, means for rotating the pipe, a carriage, a threading die on said carriage, a rounding device on said carriage, poweroperated means for sitively moving said carriage in either dlrection and"power-operated means independent of said last named means for positivel movin said carriage in one direction, su stantialIy as described.

In testimony whereof, I have hereunto set my hand.

EDGAR H. WILSON. 

